117results about How to "Increased level of protection" patented technology

The controllable arrester in metal oxide includes control part and fixed part connected in series. In normal operation of system, the control part and the fixed part together bear system voltage. When amplitude value of system over voltage exceeds prearranged threshold value, the fixed part bears system over voltage. Combining power electronic device in large power with arrester in metal oxide (MO), the invention puts forward concept and designing idea of controllable arrester for aiming at issue of over voltage protection for transmission system in super voltage, extra high voltage. Based on condition of maintaining invariable performance parameters of MO resistance piece, the invention reduces residual voltage of arrester effectively by using characteristics: quick response speed of power electronic device, steady operation, and flexible adjustment so as to raise protection level for arrester.

The present invention provides an assembly type solar photovoltaic power generation road surface module and application thereof. The module comprises at least the following structures from bottom to top: an insulated sealing layer, a solar photovoltaic panel layer, and a transparent anti-slide wearing layer. The module is mainly used for solar photovoltaic power generation. The assembly type solar photovoltaic power generation road surface module can meet both the road bearing demand and the solar photovoltaic power generation demand, and has a broad market prospect.

The invention relates to a method for protecting a lithium ion battery (1) in a vehicle. According to the invention, the lithium ion battery (1) is disconnected when an on-board power supply (4) of a vehicle is thermally and/or electrically overloaded. The invention further relates to a device for protecting a lithium ion battery (1) in a vehicle.

The invention discloses an Ethernet port protection method and an Ethernet port protection device. The Ethernet port protection method comprises the following steps of: setting a standby network element which is connected with an active network element for constructing an Ethernet port; monitoring the operating state of the active network element; and when the active network element fails, constructing the Ethernet port by using the standby network element. By the technical scheme, the problem of incapability of protecting a service under the condition of failure of the whole network element in the prior art is solved, protection is extended to a network element level, and a service protection level is improved.

The invention discloses an automated control throttle for a belt roadway of a mechanical mine, which comprises a throttle, wherein a belt is arranged below the throttle, and a lower baffle plate is arranged below the belt; the throttle is connected with a cylinder through a pulley, the cylinder is fixed on a roadway by a cylinder fixing rack, the air inlet end of the cylinder is connected with an air source pipeline through an air inlet pipeline, an electromagnetic valve is arranged between the air inlet pipeline and the air source pipeline, and the electromagnetic valve is connected with an electric cabinet; and one side of the belt is provided with a sensor, and the sensor is connected with the electric cabinet. The automated control throttle overcomes the existing defects in the prior art, realizes the automatic control on the air input, and is convenient to maintain and reliable to operate.

The present invention relates to the technical field of mobile communications, and discloses a data transmission method and a data transmission apparatus. The data transmission method comprises the steps of receiving transmitted data, wherein the transmitted data comprises a first secret key and encryption data; acquiring a second secret key; acquiring the first secret key from the transmitted data, and synthesizing the first secret key and the second secret key so as to acquire a target secret key; and when the target secret key is matched with an original secret key, decrypting the encryption data by using the target secret key, so as to acquire decrypted data, wherein the original secret key comprises the first secret key and the second secret key. The present invention further provides a data transmission apparatus. According to the data transmission method and the data transmission apparatus, the data can be encrypted in transmission between terminal devices, so that data leakage caused by the transmission process is prevented, and the user security risk in data transmission is eliminated.

The invention relates to an online monitoring device for a lightning arrester. The online monitoring device comprises a sampling circuit, a signal conditioning circuit, a lightning stroke detection circuit, a main control module, a power supply module and a display module; the sampling circuit comprises a gas discharge tube, a capacitor, a current limiting resistor, a sampling resistor and a TVS;the signal conditioning circuit is used for collecting and conditioning voltage signals of both ends of the sampling resistor; the lightning stroke detection circuit is used for detecting lightning stroke signals at two ends of the sampling resistor in real time; the main control module is used for processing and outputting the voltage signals after voltage signals are conditioned via the signal conditioning circuit, the main control module is also used for controlling the power supply module to supply electric power to the signal conditioning circuit and counting and outputting the lightningstroke signals detected via the lightning stroke detection circuit, and the display module is used for displaying data output via the main control module. The online monitoring device disclosed in theinvention helps solve a problem that a conventional online monitoring device for the lightning arrester cannot monitor current leakage and the number of actions of the lightning arrester for alternating current and direct current systems of 3kV and below; the online monitoring device helps fill in the blank of online monitoring of the lightning arrester for the alternating current and direct current systems of 3kV and below, and helps improve protection over the lightning arrester for the alternating current and direct current systems of 3kV or more.

A truncated neuraminidase vaccine for preventing influenza features that its active component is a truncated A/PR/8/34 influenza virus VA gene instead of a full-length one and the shortest potector sequence nt 58-nt1365 or nt 1-nt 1299 in its full nucleoside sequent is determined, so finding an effective approach to prepare said vaccine. Its preparing process is also disclosed.

The invention provides an electrostatic discharge protection circuit, an integrated circuit chip and electronic equipment. The electrostatic discharge protection circuit comprises a transient circuit,a voltage division circuit and a grid drive discharge device connected between a power supply pin and a ground connection pin in parallel and coupled sequentially; when static electricity is detectedby the transient circuit, the voltage division circuit is triggered to send a drive signal of which a voltage value is smaller than a power supply voltage value to a grid electrode of the grid drivedischarge device, and the static electricity is released by the grid drive discharge device under the driving of the drive signal. The grid potential of the discharge device can be effectively reduced, and the failure problem of ESD protective capability caused by excessive grid local heat power is avoided.

The invention relates to the field of chip technology and information safety. By the method, the wiring density of a metal wire at a top layer can be improved, the failure area of a shielding line ata key region is reduced, the difficulty on circuit analysis by an attacker is improved, the purpose of important protection on the key region of the chip is achieved, the attacker can be effectively prevented from acquiring internal data of the chip by attack means such as shooting analysis reverse engineering and FIB, and a safety coefficient of the key region of the chip is improved. The wiringmethod for reinforcing protection on the important region of the metal protection layer at the top layer of the chip, disclosed by the technical scheme comprises the steps of firstly, planning wiringregion area and a protection level of each region according to the size of the chip, and dividing a metal shielding layer at the top layer into several wiring regions; and secondly, wiring and fillingeach wiring unit according to a safety coefficient of the wiring region, wherein the wiring number of each region is gradually increased according to the safety level. The method is mainly applied toa chip design and manufacturing occasion.

The invention relates to a surge protector with long service lifetime and high protection. The surge protector comprises a current output outer cylinder, wherein a zinc oxide piezoresistor substrate is arranged at an internal bottom part of the current output outer cylinder, a pressure bearing ring, a polarity cross cap and a T-shaped isolation sleeve are sequentially arranged on the piezoresistor substrate, an induction coil is wound around the pressure bearing ring in a matching way, a current transmission end of an induction coil is connected with a passive current comparison module by two groups of wiring caps, and the piezoresistor substrate, the polarity cross cap and the induction coil are pressed in the current output outer cylinder by a hole elastic baffle ring to form a whole current discharge passage. The surge protector has the advantages of reasonable structure, reliable working performance, good protection effect, long service lifetime and the like, and is convenient to operate, and the development trend for effect improvement of a current surge protector and the increasingly market demand can be satisfied very well.

The invention provides a chip packaging structure with a package and a realization process. The process includes following steps: providing a wafer; thinning the backside of the wafer; leading out a line on a function surface of the wafer after film-turning and forming a metal wiring layer; coating an insulating layer on the line layer; etching a ball-implanting pad on the insulating layer and implanting a soldering ball; cutting the wafer after film-turning; covering an insulating layer on the backside of the wafer and filling a cutting channel; and cutting and separating the wafer into single chips and forming a six-surface wrapping structure. According to the chip packaging structure with the package, adverse influences on silicon in a product production process, such as moisture absorption, layering, or other damages can be improved, the chip protection grade is improved, the influence of the CTE gap of packaging materials on the chips is reduced, the reliability of the product is improved, and the product yield rate is increased.

The invention relates to a triggered fuse for low-voltage applications for protecting devices that can be connected to a power supply system, in particular surge protection devices, consisting of at least one fusible conductor which is located between two contacts and is arranged in a housing, and also consisting of a trigger device for controlled disconnection of the fusible conductor in the event of malfunctions or overload states of the respective connected device, wherein an arc quenching medium is introduced into the housing. By way of example, an arc quenching medium-free region is formed in the housing such that the at least one fusible conductor is exposed, and a mechanical disconnection element can be introduced into the arc quenching medium-free region via an access point in thehousing in order to mechanically destroy the at least one fusible conductor depending on the trigger device, and independently of its melting integral.

An overvoltage fully-guarding technology for a neutral point ungrounded system power grid is characterized in that three sets of high-voltage ZnO nonlinear resistors 3, 6 and 9 are in parallel connection with series connection branches of three sets of high-energy SiC and high-energy ZnO nonlinear resistors 1, 2, 4, 5, 7 and 8 respectively to form star-shaped connection, and a neutral point is formed. Components with branches being in parallel connection are connected between the neutral point and the ground a SiC nonlinear resistor 14, a high-voltage ZnO nonlinear resistor 13 and high-energy SiC and high-energy ZnO nonlinear resistors 11 and 12 to be used for overvoltage fully-guarding of a power system and power equipment. According to an overvoltage fully-guarding device made by the technology, overvoltage guarding equipment such as an RC resistance-capacitance absorption device, an arc suppression coil, a resonance eliminator and a lightning arrester can be effectively replaced, and the capacity of inside overvoltage and outside overvoltage fully guarding is achieved. The overvoltage fully-guarding device effectively lowers the safety guarding cost of electrical equipment, and has high using value.

The invention relates to an arrangement for safely removing overvoltage protection devices from the mains, independently of switchgear or backup fuses, in the event of critical operating states, particularly transition of the overvoltage protection device to a fault or overload state, consisting of a device for sensing the current flowing through the overvoltage protection device and a switching apparatus connected in series with the overvoltage protection device. According to the invention, the device for sensing the current flowing through the overvoltage protection device is in the form ofa toroidal coil with or without a ferromagnetic core, which toroidal coil is designed such that fault currents of medium amplitude, which differ from event-dependent surge currents, are detectable. The toroidal coil is electrically connected to an indicator device or a similar means, the indicator of which is mechanically connected to the switching apparatus in order to trigger same.

The invention belongs to the fields of cryptography, information security, geographic information systems and digital image processing, and relates to a vector map data protection and access control method based on a file filter driver for carrying out data protection and file access control on a digital vector map. The method comprises the following steps: judging whether a file is a vector map file or not; putting the file into a control list; controlling rule integrity authentication; carrying out the file access control; encrypting and decrypting the file content; hiding the file size and control information; preventing data leakage when closing. According to the vector map data protection and access control method disclosed by the invention, the file filter driver is combined, transparent encryption and decryption and the file access control are carried out on vector map data at the bottom layer of an operating system, so that user operation habits are not affected, and the vector map data on a disk are ensured to be stored in a cipher text form to protect the security of the vector map data. Compared with data watermarking, the vector map data protection and access control method disclosed by the invention protects the vector map more thoroughly and reliably.

The present invention relates to the field of vaccines for protecting against polio, and in particular to combination vaccines for protecting against polio, diphtheria, tetanus, and pertussis diseases. Specifically, vaccines comprising reduced dose inactivated poliovirus (IPV) is provided, which can maintain an adequate or improved level of protection against polio.

The invention relates to a construction method of a protein microcrystal embedded CyHV-2 (cyprinid herpesvirus II)-type-GCRV (grass carp reovirus) subunit vaccine based on a yeast expression vector. An AOX1 promoter is used for controlling a silkworm cypovirus protein gene; a TEF1 promoter is used for controlling VP6 and VP7 from GCRV and CyHV-2 ORF72, ORF66, ORF81, ORF82 and an antigenic epitopefusion sequence VP6-VP7-ORF72-ORF66-ORF81-ORF82-VP3 obtained after codon optimization of cypovirus VP3. The vector transforms yeast, inducible expression is performed through methanol, expressed poly-antigen epitope fusion protein is embedded in recombinant cypovirus protein under the guide of cypovirus VP3, a protein microcrystal of embedded CyHV-2-GCRV is formed, the protein microcrystal is split by a sodium carbonate-sodium bicarbonate solution, the pH is regulated to 7.12 with a hydrochloric acid solution, and a supernatant obtained after centrifugation is CyHV-2-GCRV joint subunit vaccineantigen.

The invention relates to a CPV (canine parvovirus)-HuN1703 strain and an application thereof. The blood congeal titer of the strain is equivalent to that of an existing separation toxic strain, the proliferation ability of the strain is superior to that of a CPV standard strain and a CPV toxic strain previously separated by an inventor, and the strain is a good inactivated vaccine strain. An inactivated vaccine prepared after inactivation can effectively stimulate an inoculated animal to generate an IgG antibody with effective level to cope with infection caused by different CPV toxic strains,antibody generation level is high, and animal protection capability is high.

The invention provides a mobile toolbox, and belongs to the technical field of transportation. The mobile toolbox solves the problems that a current toolbox is easy to damage, and the anti-theft performance is poor. The mobile toolbox comprises a box body which is in the shape of a square thin-walled container, a box cover which is hinged to the box body and locked by the box body and a locking device. One end of the locking device is provided with a handle. The handle is arranged on the box cover and protrudes out of the box cover. The other end of the locking device is hinged to the box body. The handle rotates and can drive the box cover to move, so that locking on the box body and the box cover is disengaged, and the box cover can be opened. The mobile toolbox has the advantages of being good in anti-theft performance, and convenient to use.

The invention provides a secure computer motherboard encrypted based on a State-Cryptography-Administration algorithm and an encryption method. The secure computer motherboard comprises a computer motherboard body, a State-Cryptography-Administration chip for encrypting data of the computer motherboard body and at least one State-Cryptography-Administration assembly which is arranged on the periphery of the computer motherboard body and matched with the State-Cryptography-Administration chip to encrypt the data of the computer motherboard body, wherein the State-Cryptography-Administration chip is connected with the computer motherboard body through an LPC interface or a USB interface, and the State-Cryptography-Administration assembly is connected with the computer motherboard body.